How to say "lucky" in Japanese

Choosing the right word

ラッキーCommon
na-adjective, nounThe direct loanword for 'lucky'; it can also stand alone as an exclamation when something good happens, making it a natural pick for a lucky break.
インテルの連中れんちゅうは君きみを得えてラッキーだよ。↗
The Intel people are lucky to have you!
運がいいうんがいい
expression, i-adjective (よい/いい)Literally 'one's luck is good'; this covers the 'fortunate' sense, describing someone or something as favored by luck.
ケイちゃんはとても運うんがいいのよ。お産さんの時ときから、そうだったわ。↗
Kei's very lucky! He has been since his birth.
間がいいまがいい
expression, i-adjective (よい/いい)Covers the 'timely' sense: 間 here is timing, so this describes being lucky in when something happens, with the moment itself turning out favorable or convenient.
運のいいうんのいい
expression, i-adjective (よい/いい)The attributive counterpart of 運がいい, with the same 'fortunate' meaning; this is the form you reach for when the phrase modifies a noun directly.
間のいいまのいい
expression, i-adjective (よい/いい)The attributive counterpart of 間がいい, with the same 'timely, convenient' sense; use it when the phrase modifies a noun directly.

Choose 「ラッキー」 as the direct equivalent of 'lucky', 「運がいい」 and its attributive counterpart 「運のいい」 for genuine good fortune, and 「間がいい」 and 「間のいい」 when lucky timing is the point.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents

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